﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

class MultiplicationSign
{
    static void Main(string[] args)
    {
        Console.WriteLine("Please, enter three real numbers: ");
        double a = double.Parse(Console.ReadLine());
        double b = double.Parse(Console.ReadLine());
        double c = double.Parse(Console.ReadLine());
        if (a == 0 || b == 0 || c == 0)
        {
            Console.WriteLine("Result of multiplication a*b*c is 0.");
        }
        else if ((a < 0 && b < 0 && c > 0) || (a < 0 && b > 0 && c < 0) || (a > 0 && b < 0 && c < 0))
        {
            Console.WriteLine("Result is +");
        }
        else if ((a < 0 && b > 0 && c > 0) || (a > 0 && b < 0 && c > 0) || (a > 0 && b > 0 && c < 0) || (a < 0 && b < 0 && c < 0))
        {
            Console.WriteLine("Result is -");
        }
        else
        {
            Console.WriteLine("Result is +");
        }
    }
}
